Please explain to me how Bolt Card does not let the first merchant you use it with to drain the balance of the entire card?
22 sats \ 0 replies \ @DarthCoin 6h
Those cards are not just simple NFC LNURL-w links. It contain a security tag embedded. Even that the shop could grab the LNURL-w somehow, it still needs the security code to authorize the withdrawal. Read more here: https://www.nxp.com/docs/en/application-note/AN12196.pdf
Here more explanations about how to make your own cards with LNbits, BTCpay, BoltcardHub etc https://plebtag.com/write-tags/
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